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Scientific Name
Doodia australis
Family Name
BLECHNACEAE
Common Name
Common rasp fern
Status
Height
0.6m (60cm)
Flowers
None
Fruit
Spores
Form
Terrestrial fern with underground stolons: fronds 30-60cm, rough, not dimorphic.
Municipalities
Break O'Day; Derwent Valley; Georgetown; Glamorgan-Spring Bay; Glenorchy; Hobart; Kentish; King Island; Kingborough; Launceston; Northern Midlands; Sorell
Communities
Riparian; Coastal gullies in dry forest
Habitat Notes
Uncommon in Tasmania and mostly restricted to the mideast coast and Tamar estuary. Grows in thin soil layers over rock but more typically on the margins ofsmall permanent creeks where it grows from the rubble of the creekbank. Intolerant of deep shade.
Site Tolerance
Exposed; Moist; Rocky
Frost Tolerance
Soil Tolerance
Poor; Well-drained
General Notes
Fronds, or portions of fronds, containing ripe spores can be placed in a paper bag which is left upright in a dry and draught-free place. Spores should begin to release immediately and all spores are released within days unless the species has tough, leathery fronds. Spores settle at the bottom of the bag. Some species produce vast quantities of spores from one frond, others require dozens of fronds to produce the same amount.After sowing specks of green appear after 2-4 weeks. These are the young prothalli and during the next 6-12 months they are at risk from overcrowding and pathogens. When the first fronds appear the sporelings can be slowly hardened by gradual removal of the container cover. Great care must be taken to avoid drying out. Prick out sporelings when the second frond appears. Suitable below powerlines.
Propagation Details
Propagation Calendar
Flowering Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seed Collecting Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sowing Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Cutting Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seed Information
Seed Collection
Sori in two rows becoming confluent with age.spores are collected when mature on the frond. unripe sori are generally light green then change to yellowish brown and to dark brown or black when mature
Seed Treatment Method
Standard
Seed Storage Life
Viable Seeds Per Gram
Seed Treatment Notes
Sow spores into a pot in a water retaining medium with good drainage. Sterilise medium & containerwith boiling water and sow spores bysprinkling a small amount onto the surface of the medium. Cover immediately with clean glass or plastic wrap and leave in a warm area in strong light but not direct sunlight.
Germination Time
Suitable for Direct Seeding
Cuttings
Expected Time to Take Root
Expected Time to Plant Out
Propagation by Division
N.B. Transplant only from nearby to avoid disease.
Yes
Cutting Notes
May be grown by division. Hardy and readily grown in any partially protected situation in the garden. Will withstand considerable sunshine especially if regularly watered. Responds to mulches and light applications of fertilizer. New fronds are often an attractive purplish pink.
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Database development and website design by
Andrew Smith